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प्रश्न
In stainless steel alloy, iron metal is mixed with:
(a) Cu and Cr
(b) Cr and Ni
(c) Cr and Sn
(d) Cu and Ni
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उत्तर
(b) Cr and Ni
Stainless steel is an alloy of iron, chromium and nickel. It is extremely strong and tough and does not corrode at all.
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संबंधित प्रश्न
What is an alloy?
Tinning : Tin : : Galvanizing : _________
What are alloys?
What is anodising? Give its applications.
State two conditions for the rusting of iron.
Corrosion can be an advantage in some case.Explain ?
Observe the following picture a write down the chemical reaction with the explanation.

Answer the following question.
a) What is meant by corrosion?
b) Write names of any two methods of prevention of corrosion.
c) In which method, metal like copper, aluminium are coated with a thin layer of their oxides by means of electrolysis.
d) Explain this method with diagram.
Answer the following question.
List two properties of alloys.
State whether the statement given below is true or false. If false write the correct statement.
Either oxygen or moisture is essential for rusting.
_______ is an alloy made from iron, carbon and chromium.
Match the columns.
| Group A | Group B |
| 1) Electroplating | a) Pressure cooker |
| 2) Anodising | b) Silver plated spoons |
| c) Coating of tin on copper | |
| d) Coating of Zinc on iron |
Explain concept with example/explain with the help of a balanced equation.
Corrosion
Draw a neat labelled diagram.
Electroplating
Observe the following diagram and give answers.

- Name this method of prevention of corrosion.
- For prevention of which metal this method is used?
- What is used as anode in this method?
Give the equation for the formation of rust.
Amalgam is an alloy of ____________.
The diagram shows the reaction between metal and dil. acid.

What is the reason for different behaviour of Mg in test tube B?
Identify the correct statement from the following:
Give an example of a chemical reaction for the following situation:
Sound is produced
